macro.dcc

sharewall is very good

#
# Shorewall version 4 - DCC Macro
#
# /usr/share/shorewall/macro.DCC
#
#	This macro handles DCC (Distributed Checksum Clearinghouse) traffic.
#	DCC is a distributed spam filtering mechanism.
#
###############################################################################
#ACTION	SOURCE	DEST	PROTO	DEST	SOURCE	RATE	USER/
#				PORT(S)	PORT(S)	LIMIT	GROUP
PARAM	-	-	tcp	6277
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE